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About Advanced Features & Operation
Page 14
MEMORY BACKUP - In the event of a power loss, the
thermostat will retain the stored program settings without
external power or batteries.
2 STAGE OPERATION - The 2nd Stage of heat is turned
on when (1) the 1st Stage has been on for a minimum
of two minutes, and (2) the temperature spread from
the setpoint is equal to or greater than: the setpoint
plus the deadband, plus 2 degrees.
Heat
Setpoint
Cool
Setpoint
Dead
Band
Dead
Band
2 degrees
1st Stage
turn on
2nd Stage
turn on
1st Stage
turn on
Heating
Cooling
MINIMUM HEAT/COOL SETPOINT DIFFERENCE - The Heat
and Cool setpoints will not be allowed to come any closer
to each other than the value set in Advanced Setup step
# 6, on page 12. This minimum difference is enforced
during Auto changeover operation.
and Program On
ELECTRIC HEAT - Selecting Electric Heat on, page 11,
step # 4, will cause the thermostat to turn on the fan
any time there is a heat demand. Since all
control the fan, this feature should be off
is only electric.
immediately
gas furnaces
unless the heater